Detail of the mural by Vaclav Vaca at the Lady altar in St. Michael's Cathedral.
Mary is the most beautiful flower that ever was seen in the spiritual world. It is by the power of God's grace that from this barren and desolate earth there have ever sprung up at all flowers of holiness and glory. And Mary is the queen of them. She is the queen of spiritual flowers; and therefore she is called the rose, for the rose is fitly called of all flowers the most beautiful.
- Ven. John Henry Cardinal Newman